PLEASE DO A PROPER CALCULATION. IF YOU CANNOT DO AND UNSURE OF THE ANSWER PLEASE DONT WASTE TIME. I REALLY NEED A PROPER ANSWER

Question $3$

A $10\mathrm{.}0m$ long member is subjected to end moments about the major and minor axis as shown in

Figure Q$3-1$ below. The member is restrained at the two ends by simple connections and also

laterally restrained at mid$-$height to reduce the z$-$z buckling length as shown in Figure Q$3-2.$

Elsewhere, it is laterally unrestrained.

Figure Q$3-2$: Diagram to illustrate the lateral restraint at mid$-$height

Consider the use of UB$457$x$191$x$98$ in S$355$ steel and perform

$($a$)$ cross$-$section capacity check, and

$($b$)$ member buckling check $($you may take $k_{zy}=1\mathrm{.}0)$

Do note that the member is under LOW shear and hence shear check is NOT REQUIRED.

IMPORTANT: SOME VALUES ARE NOT NEEDED FOR THIS MEMBER CHECK

SO DON'T WASTE TIME CALCULATING ALL THE VALUES.